Background : me and my younger (16) sister are both adopted and are biologically not related. We have amazingly supportive, kind generous loving parents. Sister has had letterbox contact with biological parents. I have not.
So tonight I was on facebook and decided to have a look on her page. Some middle aged man had tagged her in a status saying "I love (sisters name) she is my little princess". Then I saw her status which was "is really worried about the French exam tomorrow I know I'm gonna fail" and the same man had put "you'll be fine sweetie do me proud". I was pretty concerned at this and wrote on her wall asking who the man was because what he's saying is a little inappropriate. Only after I pressed send I realised that there is a good chance this man is my sisters biological father.
I have sent my sister a text to apologise and explained that I "hadn't put two and two together.
AIBU to feel very ill at ease with this mans comments? I probably am but inexplicably I have been totally thrown with this. I feel angry/sad/jealous/worried all in one and have spent the night sobbing. I honestly don't understand why I have had such a strong reaction.